Looking to get started on a VIC... Please post any VIC stuff here. Thanks :)
https://www.youtube.com/watch?v=BtrHvTtsWt4
https://www.youtube.com/watch?v=BtrHvTtsWt4
Looking to get started on a VIC... Please post any VIC stuff here. Thanks :)
So Matt and I are thinking about using microwave transformers to get our high voltage. Pulsed by the frequency generator.
I guess after the transformer we should make the bi-filar coil to act as a choke?
so I want to suggest to exchange electrical values like inductance of each coil at a given frequency (i.e. 1 kHz), Al value of the core and Amin for the effective core diameter. also wire diameter or at least RMS amp flow expected are necessary for exchange.
Adding min and max pulsing frequency shooting for and of course primary pulsing voltage range shall be a minimum set of values worth for exchange.
bussi04
I dont think I understood any of that. Please elaborate on your ideas.Quote from bussi04 on October 1st, 2011, 01:15 AM so I want to suggest to exchange electrical values like inductance of each coil at a given frequency (i.e. 1 kHz), Al value of the core and Amin for the effective core diameter. also wire diameter or at least RMS amp flow expected are necessary for exchange.
Adding min and max pulsing frequency shooting for and of course primary pulsing voltage range shall be a minimum set of values worth for exchange.
bussi04
Tesla Bi-filar
I defined a set of electrical values taken from datasheets or calculations each of us should publish here in the thread instead of pictures and number of turns. those pics and number of turns don´t allow to compare anything in practical experiments.Quote from dirtwill on October 1st, 2011, 06:43 AM I dont think I understood any of that. Please elaborate on your ideas.Quote from bussi04 on October 1st, 2011, 01:15 AM so I want to suggest to exchange electrical values like inductance of each coil at a given frequency (i.e. 1 kHz), Al value of the core and Amin for the effective core diameter. also wire diameter or at least RMS amp flow expected are necessary for exchange.
Adding min and max pulsing frequency shooting for and of course primary pulsing voltage range shall be a minimum set of values worth for exchange.
bussi04
Tesla Bi-filar
as an example:
taking a stanley meyer steel core without defined AL value etc. and adding the information "primary 100 turns" is quite useless. more useful is a value like 100 mH that can be used for calculations in electronic circuits. once you are using another core with a higher AL value than Stan Meyer´s steel core you will have a completely different turn count for the same induction.
hope that helps to make clear what I wanted to state.
bussi04
http://www.diygallery.de/DIYsites/inductor.html
I found this Helpfull
So are you guys saying we should have a meter that reads Inductance?Like H or mH? for proper testing?
http://www.ebay.ca/itm/LCR-Inductance-Capacitance-Digital-Multimeter-Meter-RCL-/300418629699?pt=LH_DefaultDomain_0&hash=item45f2588043
LCR Inductance Capacitance Digital Multimeter Meter RCL
$20 on ebay
good find, i have one just like this that was donated to me. it works ok but there is no frequency selector. i will be getting a much better LRC meter.Quote from dirtwill on October 5th, 2011, 09:52 PM http://www.diygallery.de/DIYsites/inductor.html
I found this Helpfull
So are you guys saying we should have a meter that reads Inductance?Like H or mH? for proper testing?
http://www.ebay.ca/itm/LCR-Inductance-Capacitance-Digital-Multimeter-Meter-RCL-/300418629699?pt=LH_DefaultDomain_0&hash=item45f2588043
LCR Inductance Capacitance Digital Multimeter Meter RCL
$20 on ebay
also, attached is the VIC readings of my VIC. you can make a new "sheet" at the bottom and enter your test results.
Then re upload the file. we can just keep updating this excel file as we progress.
my stuff is kinda sloppy... but that's what i got... if some one wants to make a better spreed sheet. that's cool!
thanks, ~Russ
Ok done... $34 with shipping ;). Frequency and inductance :)Quote from Rwg42985 on October 6th, 2011, 07:24 AM good find, i have one just like this that was donated to me. it works ok but there is no frequency selector. i will be getting a much better LRC meter.Quote from dirtwill on October 5th, 2011, 09:52 PM http://www.diygallery.de/DIYsites/inductor.html
I found this Helpfull
So are you guys saying we should have a meter that reads Inductance?Like H or mH? for proper testing?
http://www.ebay.ca/itm/LCR-Inductance-Capacitance-Digital-Multimeter-Meter-RCL-/300418629699?pt=LH_DefaultDomain_0&hash=item45f2588043
LCR Inductance Capacitance Digital Multimeter Meter RCL
$20 on ebay
also, attached is the VIC readings of my VIC. you can make a new "sheet" at the bottom and enter your test results.
Then re upload the file. we can just keep updating this excel file as we progress.
my stuff is kinda sloppy... but that's what i got... if some one wants to make a better spreed sheet. that's cool!
thanks, ~Russ
http://www.ebay.ca/itm/180614882090?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
good find, i have one just like this that was donated to me. it works ok but there is no frequency selector. i will be getting a much better LRC meter.Quote from dirtwill on October 5th, 2011, 09:52 PM http://www.diygallery.de/DIYsites/inductor.html
I found this Helpfull
So are you guys saying we should have a meter that reads Inductance?Like H or mH? for proper testing?
http://www.ebay.ca/itm/LCR-Inductance-Capacitance-Digital-Multimeter-Meter-RCL-/300418629699?pt=LH_DefaultDomain_0&hash=item45f2588043
LCR Inductance Capacitance Digital Multimeter Meter RCL
$20 on ebay
also, attached is the VIC readings of my VIC. you can make a new "sheet" at the bottom and enter your test results.
Then re upload the file. we can just keep updating this excel file as we progress.
my stuff is kinda sloppy... but that's what i got... if some one wants to make a better spreed sheet. that's cool!
thanks, ~Russ
[/code]Hey Russ I am trying to make sense of your VIC datasheet.Quote from Rwg42985 on October 6th, 2011, 07:24 AM good find, i have one just like this that was donated to me. it works ok but there is no frequency selector. i will be getting a much better LRC meter.Quote from dirtwill on October 5th, 2011, 09:52 PM http://www.diygallery.de/DIYsites/inductor.html
I found this Helpfull
So are you guys saying we should have a meter that reads Inductance?Like H or mH? for proper testing?
http://www.ebay.ca/itm/LCR-Inductance-Capacitance-Digital-Multimeter-Meter-RCL-/300418629699?pt=LH_DefaultDomain_0&hash=item45f2588043
LCR Inductance Capacitance Digital Multimeter Meter RCL
$20 on ebay
also, attached is the VIC readings of my VIC. you can make a new "sheet" at the bottom and enter your test results.
Then re upload the file. we can just keep updating this excel file as we progress.
my stuff is kinda sloppy... but that's what i got... if some one wants to make a better spreed sheet. that's cool!
thanks, ~Russ
Which color is what coil? Primary, secondary, feedback and chokes.
Also your datasheet has two different feedback, why is that?
Thanks... I'll be shipping your board on Tuesday. Monday is Canada thanksgiving.
Later ;)
Phil,
I agree, for inner secondary and outer chokes I used pie divided pancake style windings. due to the concentric structure of the bobbins special care must be taken at the wire entry points because there the complete voltage difference occurs. so I think my next transformer will have entry and exit points for a winding at opposite sides.
I calculated windings space volume needed with a selfmade excel sheet. for winding efficiency I took 98%. that showed to be a much too optimistic point of view.
In the German version of Wikipedia I found an article about different winding techniques and the technique I used was called "wild winding" on the opposite of orthocyclic winding technique (http://de.wikipedia.org/wiki/Spulenwickeltechnik).
so I read and found out in practical terms that 73% winding efficiency for wild windings is more what can be expected.
It´s time for my next more elaborated VIC,
bussi04
Russ,
it´s too early to share the excel sheet.
when designing my next VIC I will have to do some error corrections, translate it into english and add parametric input in inches.
at the moment it´s operating in mm, produces a side view simulation of the bobbins and generates a parameter output serving as parameter input for my cnc lathe.
stay tuned
bussi04
Phil,
I agree, for inner secondary and outer chokes I used pie divided pancake style windings. due to the concentric structure of the bobbins special care must be taken at the wire entry points because there the complete voltage difference occurs. so I think my next transformer will have entry and exit points for a winding at opposite sides.
I calculated windings space volume needed with a selfmade excel sheet. for winding efficiency I took 98%. that showed to be a much too optimistic point of view.
In the German version of Wikipedia I found an article about different winding techniques and the technique I used was called "wild winding" on the opposite of orthocyclic winding technique (http://de.wikipedia.org/wiki/Spulenwickeltechnik).
so I read and found out in practical terms that 73% winding efficiency for wild windings is more what can be expected.
It´s time for my next more elaborated VIC,
bussi04